/* ============================================================
   TouchType Trainer — styles.css
   v0.1 — Light theme only, but every colour lives in CSS
   variables so a dark/system theme can be added without touching
   component styles.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans",
          "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
               "Liberation Mono", monospace;

  --bg: #F3F5FA;
  --surface: #FFFFFF;
  --surface-2: #EEF1F8;
  --line: #E3E7F0;

  --text: #1A2233;
  --text-2: #55607A;
  --text-3: #8A94A8;

  --primary: #4F46E5;
  --primary-strong: #4338CA;
  --primary-soft: #E9E8FC;

  --correct: #0E9F6E;
  --correct-soft: #E4F6EF;
  --error: #E11D48;
  --error-soft: #FDE9EE;

  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-md: 0 10px 24px -8px rgba(16, 24, 40, 0.16);

  /* Keyboard sizing (Settings will expose Small/Medium/Large later) */
  --key-h: clamp(54px, 8.4vh, 74px);
  --key-gap: 5px;
  --key-font: clamp(19px, 2.9vmin, 30px);
  --kb-bg: #E9EDF5;
  --key-bg: #FFFFFF;
  --key-special-bg: #DDE3EE;
  --key-pressed-bg: #C7CFE0;

  /* Typing text size */
  --type-size: clamp(22px, 3.4vmin + 6px, 40px);
}

/* ---------- Reset & base ---------- */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  overscroll-behavior: none;            /* prevent pull-to-refresh while typing */
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}

.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
}
@supports (height: 100dvh) { .app { height: 100dvh; } }

button { font-family: inherit; }

/* ---------- Top bar ---------- */
.topbar {
  flex: 0 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  padding-left: calc(16px + env(safe-area-inset-left));
  padding-right: calc(16px + env(safe-area-inset-right));
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { display: inline-flex; flex: 0 0 auto; }
.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-version {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-3);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
}

/* ---------- View container ---------- */
.view {
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  display: block;
}

/* ---------- Bottom navigation ---------- */
.bottomnav {
  flex: 0 0 auto;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}

.nav-item {
  flex: 1;
  height: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: 0;
  background: none;
  color: var(--text-3);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  transition: color 0.15s ease;
}
.nav-item:focus-visible { outline: 3px solid var(--primary); outline-offset: -3px; border-radius: 12px; }
.nav-item.is-active { color: var(--primary); }

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: 0;
  border-radius: 14px;
  font-size: 17px;
  font-weight: 700;
  min-height: 52px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  transition: transform 0.06s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px -6px rgba(79, 70, 229, 0.55);
}
.btn-primary:active { background: var(--primary-strong); }

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:active { background: var(--surface-2); }

.btn-xl { min-height: 60px; font-size: 19px; border-radius: 16px; width: 100%; max-width: 400px; }

.btn-sm { min-height: 42px; font-size: 15px; padding: 0 16px; border-radius: 12px; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* ============================================================
   HOME VIEW
   ============================================================ */
.home-view {
  height: 100%;
  overflow-y: auto;
  padding: 18px 16px calc(24px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.hero {
  padding: 30px 22px 24px;
  text-align: center;
  background:
    radial-gradient(120% 90% at 50% -10%, #EDEBFF 0%, var(--surface) 55%),
    var(--surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.hero-mark { display: inline-flex; margin-bottom: 4px; }

.hero h1 {
  margin: 0;
  font-size: clamp(26px, 5vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero-sub {
  margin: 0 0 6px;
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--text-2);
  max-width: 460px;
}

.hero-chips {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.hero-chips li {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 999px;
  padding: 6px 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.roadmap { padding: 20px 22px; }
.roadmap h2 { margin: 0 0 12px; font-size: 18px; letter-spacing: -0.01em; }
.roadmap-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.roadmap-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text-2);
}
.roadmap-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.45;
}
.roadmap-note { margin: 14px 0 0; font-size: 13.5px; color: var(--text-3); line-height: 1.5; }

.privacy-note {
  margin: 2px 0 0;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-3);
}

/* ============================================================
   LESSONS VIEW
   ============================================================ */
.lessons-view,
.lesson-detail-view {
  height: 100%;
  overflow-y: auto;
  padding: 20px 16px calc(28px + env(safe-area-inset-bottom));
  max-width: 820px;
  margin: 0 auto;
}

.lessons-header {
  margin: 0 0 20px;
  padding: 22px 22px 20px;
  background:
    radial-gradient(120% 90% at 50% -10%, #EDEBFF 0%, var(--surface) 55%),
    var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.lessons-eyebrow,
.lesson-detail-number {
  margin: 0 0 5px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.lessons-header h1 {
  margin: 0 0 7px;
  font-size: clamp(26px, 5vw, 34px);
  letter-spacing: -0.02em;
}
.lessons-header p:last-child {
  margin: 0;
  max-width: 620px;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.5;
}
.lessons-groups {
  display: grid;
  gap: 18px;
}
.lesson-group {
  display: grid;
  gap: 9px;
}
.lesson-group-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 0 4px;
}
.lesson-group-heading h2 {
  margin: 0;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.lesson-level {
  flex: 0 0 auto;
  color: var(--text-3);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.lesson-list {
  display: grid;
  gap: 9px;
}
.lesson-card {
  appearance: none;
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  text-align: left;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  touch-action: manipulation;
  transition: transform 0.06s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.lesson-card:not(:disabled):hover {
  border-color: rgba(79, 70, 229, 0.45);
  box-shadow: var(--shadow-md);
}
.lesson-card:not(:disabled):active { transform: scale(0.99); }
.lesson-card:focus-visible,
.lesson-back:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}
.lesson-card:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}
.lesson-card.is-completed {
  border-color: rgba(14, 159, 110, 0.35);
}
.lesson-card-number {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 17px;
  font-weight: 800;
}
.lesson-card.is-completed .lesson-card-number {
  background: var(--correct-soft);
  color: var(--correct);
}
.lesson-card.is-locked .lesson-card-number {
  background: var(--surface-2);
  color: var(--text-3);
}
.lesson-card-body {
  min-width: 0;
  flex: 1 1 auto;
  display: grid;
  gap: 7px;
}
.lesson-card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.lesson-card-topline strong {
  min-width: 0;
  font-size: 16px;
}
.lesson-status {
  flex: 0 0 auto;
  color: var(--text-3);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.lesson-status.is-completed { color: var(--correct); }
.lesson-status.is-available { color: var(--primary); }
.lesson-card-instruction {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.4;
}
.lesson-card-keys,
.lesson-detail-keys {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.lesson-key {
  min-width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 7px;
  border-radius: 8px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
}
.lesson-card-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-3);
  font-size: 11px;
  font-weight: 700;
}
.lesson-progress-track {
  flex: 1 1 auto;
  height: 6px;
  min-width: 60px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-2);
}
.lesson-progress-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--correct);
}

.lesson-detail-view {
  max-width: 680px;
}
.lesson-back {
  appearance: none;
  margin: 0 0 14px;
  padding: 6px 2px;
  border: 0;
  background: transparent;
  color: var(--primary);
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  touch-action: manipulation;
}
.lesson-detail-card {
  padding: 24px 22px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.lesson-detail-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.lesson-detail-heading .lesson-status {
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--primary-soft);
}
.lesson-detail-heading .lesson-status.is-completed {
  background: var(--correct-soft);
}
.lesson-detail-card h1 {
  margin: 3px 0 9px;
  font-size: clamp(26px, 5vw, 36px);
  letter-spacing: -0.02em;
}
.lesson-detail-instruction {
  margin: 0;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.55;
}
.lesson-detail-section {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.lesson-detail-section h2 {
  margin: 0 0 10px;
  font-size: 16px;
}
.lesson-exercises {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.lesson-exercises li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px;
  border-radius: 10px;
  background: var(--surface-2);
}
.lesson-exercise-number {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface);
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
}
.lesson-exercises li > span:last-child {
  min-width: 0;
  display: grid;
  gap: 3px;
}
.lesson-exercises small {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-wrap: anywhere;
}
.lesson-detail-start {
  display: grid;
  justify-items: center;
  gap: 8px;
  margin-top: 24px;
}
.lesson-detail-start .btn { width: 100%; max-width: 320px; }
.lesson-detail-start p {
  margin: 0;
  color: var(--text-3);
  font-size: 12px;
  text-align: center;
}

/* ============================================================
   PRACTICE VIEW
   Order (both orientations): text card → tools/progress →
   stats → actions → on-screen keyboard.
   The keyboard is always fully visible; the text card scrolls.
   ============================================================ */
.practice-view {
  height: 100%;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto auto auto auto;
  gap: 10px;
  padding: 8px 10px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
  max-width: 1180px;
  margin: 0 auto;
}

/* --- Typing text card --- */
.text-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.text-card-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.next-key { font-size: 14px; font-weight: 700; color: var(--text-2); }
.next-key strong {
  display: inline-block;
  min-width: 2.1em;
  text-align: center;
  padding: 4px 10px;
  border-radius: 10px;
  background: var(--surface);
  border: 1.5px solid var(--primary);
  color: var(--primary);
  margin-left: 4px;
  font-size: 16px;
}
.progress-pill { font-size: 13px; font-weight: 800; color: var(--text-3); }

.progress-track {
  flex: 0 0 auto;
  height: 6px;
  background: var(--surface-2);
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 0 6px 6px 0;
  transition: width 0.15s ease;
}

.text-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 14px 16px 18px;
  touch-action: manipulation; /* no double-tap zoom while following the text */
  font-family: var(--font-mono);
  font-size: var(--type-size);
  line-height: 1.9;
  letter-spacing: 0.02em;
  word-break: break-word;
  overflow-wrap: anywhere;
  scrollbar-width: thin;
}

/* --- Character spans inside the text card --- */
.ch { border-radius: 5px; }
.ch-space {
  display: inline-block;
  min-width: 0.62em;
  border-bottom: 2.5px dashed rgba(100, 116, 139, 0.35);
  border-radius: 0;
}
.ch-nl { display: block; height: 1em; }
.ch-done { color: var(--correct); }
.ch-space.ch-done { border-bottom-color: var(--correct); }
.ch-err { background: var(--error-soft); color: var(--error); border-radius: 5px; }
.ch-cur {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  border-radius: 6px;
  box-shadow: inset 0 -3px 0 var(--primary);
}
.ch-flash { animation: chFlash 0.3s ease-out; }
@keyframes chFlash {
  0% { background: var(--error); color: #fff; }
  100% { background: var(--error-soft); color: var(--error); }
}

/* --- Statistics --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.stat-tile {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  padding: 8px 6px 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.stat-label {
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 2px;
}
.stat-value {
  font-size: clamp(20px, 3.6vmin, 30px);
  font-weight: 800;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

/* --- Restart / Finish --- */
.practice-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.practice-actions .btn { flex: 1; max-width: 200px; }

/* ============================================================
   ON-SCREEN KEYBOARD
   ============================================================ */
.kb {
  background: var(--kb-bg);
  border: 1px solid var(--line);
  border-radius: 18px;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 8px 6px 10px;
  user-select: none;
}
.kb-rows {
  display: flex;
  flex-direction: column;
  gap: var(--key-gap);
  max-width: none;
  margin: 0 auto;
  width: 100%;
}
.kb-row { display: flex; gap: var(--key-gap); }

.kb-key {
  flex: 1 1 0;
  height: var(--key-h);
  border: 0;
  border-radius: 12px;
  background: var(--key-bg);
  color: var(--text);
  font-size: var(--key-font);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  box-shadow: 0 2px 0 rgba(15, 23, 42, 0.09);
  transition: transform 0.06s ease, background-color 0.12s ease, box-shadow 0.12s ease;
}
.kb-key:focus-visible { outline: 3px solid var(--primary); outline-offset: 1px; }

.kb-key-special { flex-grow: 1.7; background: var(--key-special-bg); color: var(--text); font-size: clamp(16px, 2vmin, 20px); }
.kb-key-wide { flex-grow: 2.4; }

.kb-space {
  flex-grow: 4.4;
  font-size: clamp(14px, 1.8vmin, 17px);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* Pressed feedback (instant, via pointer events) */
.kb-key.is-pressed {
  transform: translateY(1px) scale(0.965);
  background: var(--key-pressed-bg);
  box-shadow: none;
}

/* The key the learner should press next */
.kb-key.is-target {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.25), 0 4px 16px -2px rgba(79, 70, 229, 0.55);
  animation: kbPulse 1.9s ease-in-out infinite;
}
@keyframes kbPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.22), 0 4px 16px -2px rgba(79, 70, 229, 0.5); }
  50%      { box-shadow: 0 0 0 6px rgba(79, 70, 229, 0.14), 0 4px 16px -2px rgba(79, 70, 229, 0.5); }
}

/* Wrong key press — brief red flash (not colour-only: the on-screen
   text also shows the error, and the Mistakes counter increments) */
.kb-key.is-error {
  background: var(--error);
  color: #fff;
  animation: kbErrFlash 0.32s ease-out;
  box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.25);
}
@keyframes kbErrFlash {
  0%   { transform: scale(0.92); }
  60%  { transform: scale(1.02); }
  100% { transform: scale(1); }
}

/* Shift / caps-lock active */
.kb-key.is-on {
  background: var(--primary-soft);
  color: var(--primary);
  box-shadow: inset 0 0 0 2px var(--primary);
}

/* ============================================================
   RESULTS VIEW
   ============================================================ */
.results-view {
  height: 100%;
  overflow-y: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px 16px calc(28px + env(safe-area-inset-bottom));
}
.results-card {
  width: 100%;
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  padding: 26px 22px;
  text-align: center;
}
.results-eyebrow {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
}
.results-message { margin: 0 0 18px; font-size: 20px; font-weight: 800; color: var(--text); }
.results-big { display: flex; align-items: baseline; justify-content: center; gap: 8px; margin-bottom: 18px; }
.results-big-num { font-size: clamp(52px, 12vmin, 76px); font-weight: 800; letter-spacing: -0.03em; color: var(--primary); line-height: 1; font-variant-numeric: tabular-nums; }
.results-big-unit { font-size: 18px; font-weight: 700; color: var(--text-3); }

.results-card .stats-grid { margin-bottom: 16px; }

.results-details {
  margin: 0 0 20px;
  padding: 14px 16px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  text-align: left;
  font-size: 14.5px;
}
.results-details div { display: flex; justify-content: space-between; gap: 12px; padding: 3.5px 0; }
.results-details dt { color: var(--text-2); font-weight: 600; }
.results-details dd { margin: 0; font-weight: 800; font-variant-numeric: tabular-nums; }

.results-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.results-actions .btn { flex: 1; min-width: 150px; }

/* ============================================================
   MODAL (leave-practice confirmation)
   ============================================================ */
.modal-root { position: fixed; inset: 0; z-index: 100; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 24px 22px;
}
.modal-card h2 { margin: 0 0 8px; font-size: 20px; letter-spacing: -0.01em; }
.modal-card p { margin: 0 0 18px; font-size: 15.5px; line-height: 1.55; color: var(--text-2); }
.modal-actions { display: flex; gap: 10px; }
.modal-actions .btn { flex: 1; }

/* ---------- Screen reader only ---------- */
.announcer {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   RESPONSIVE & ORIENTATION
   ============================================================ */

/* Narrow phones: tighten spacing so everything stays on screen */
@media (max-width: 480px) {
  .practice-view { padding: 7px 7px; gap: 8px; }
  .stats-grid { gap: 6px; }
  .stat-label { font-size: 10.5px; }
  .kb { padding: 7px 4px 9px; }
  .text-scroll { padding: 12px 12px 14px; }
}

/* Landscape phones / short screens: compact chrome so the keyboard fits */
@media (orientation: landscape) and (max-height: 520px) {
  :root {
    --key-h: clamp(36px, 10.5vh, 48px);
    --key-font: clamp(16px, 2.7vh, 22px);
    --type-size: clamp(18px, 3.4vh, 24px);
  }
  .topbar { height: 46px; }
  .bottomnav { display: none; } /* reclaim vertical space; Home is one tap away */
  .practice-view { gap: 7px; padding: 7px 12px; }
  .text-card-head { padding: 6px 14px; }
  .stat-tile { padding: 5px 4px 7px; }
  .kb { padding: 6px 5px 8px; }
}

/* Landscape tablets: make the keyboard wider & the type larger */
@media (orientation: landscape) and (min-width: 820px) and (min-height: 560px) {
  :root {
    --key-h: clamp(64px, 9vh, 84px);
    --key-font: clamp(21px, 2.5vmin, 33px);
    --type-size: clamp(26px, 3.6vh, 40px);
  }
  .practice-view { padding: 10px 18px; gap: 10px; }
  .kb { max-width: 1160px; }
  .text-scroll { padding: 18px 22px 20px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}